Video demo from TatyanaBel doesn't say what kind of clay she's using but this would be a good project for the pre-colored air-dry clays such as Cloud Clay, Makin's Clay, Hearty Clay and Model Magic. Cold porcelain should work well for these bunnies also. Bunnies are colorful and the simple shapes make it kid-friendly. TatyanaBel says: "This is just to show how easy to create something that can bring an instant smile on your friend's face or someone's you care about. I've created few dozens during Easter and placed them in the kitchen at work. Easter Bunnies had their new friends very quickly!"